Erbijsommen tot 20
Erbijsommen
|
1.
18 + 2 =
20
2
|
2.
9 + 0 =
2
9
|
3.
2 + 16 =
18
9
|
4.
16 + 1 =
17
6
|
|
5.
19 + 0 =
19
9
|
6.
6 + 10 =
7
16
|
7.
6 + 11 =
17
5
|
8.
2 + 2 =
4
3
|
|
9.
17 + 0 =
17
12
|
10.
11 + 4 =
15
6
|
11.
8 + 6 =
14
17
|
12.
14 + 3 =
17
2
|
|
13.
2 + 4 =
2
6
|
14.
15 + 0 =
15
5
|
15.
20 + 0 =
14
20
|
16.
13 + 0 =
2
13
|
|
17.
5 + 11 =
11
16
|
18.
18 + 1 =
19
4
|
19.
7 + 1 =
9
8
|
20.
13 + 5 =
4
18
|